test: Menu component tests (#13302)

* Add tests for the Menu component

* Clean up and add  NewMenu - SubMenu tests

* Remove obsolete SubMenu test

* Add LanguagePicker tests

superset-frontend/src/components/Menu/LanguagePicker.test.tsx

@@ -0,0 +1,54 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import React from 'react';
+import { render, screen } from 'spec/helpers/testing-library';
+import LanguagePicker from './LanguagePicker';
+
+const mockedProps = {
+ locale: 'en',
+ languages: {
+ en: {
+ flag: 'us',
+ name: 'English',
+ url: '/lang/en',
+ },
+ it: {
+ flag: 'it',
+ name: 'Italian',
+ url: '/lang/it',
+ },
+ },
+};
+
+test('should render', () => {
+ const { container } = render(<LanguagePicker {...mockedProps} />);
+ expect(container).toBeInTheDocument();
+});
+
+test('should render the button', () => {
+ render(<LanguagePicker {...mockedProps} />);
+ const button = screen.getByRole('button');
+ expect(button).toHaveAttribute('href', '#');
+});
+
+test('should render the menuitem', () => {
+ render(<LanguagePicker {...mockedProps} />);
+ const menuitem = screen.getByRole('menuitem');
+ expect(menuitem).toHaveTextContent('Italian');
+});

superset-frontend/src/components/Menu/LanguagePicker.tsx

@@ -51,6 +51,7 @@ export default function LanguagePicker({
  <i className={`flag ${languages[locale].flag}`} />
  </span>
  }
+ data-test="language-picker"
  >
  <Menu
  onSelect={({ key }) => {